Ground Improvement. Engineering Characteristics of Soft Ground Reinforced by Pre-Fabricated Band-Shaped Drain and Discharge Capacity.

Effect of engineering geological characteristics of Tehran’s recent alluvia on ground settlement due to tunneling

Ground settlement due to the shallow tunneling in urban areas can have considerable implications for aboveground civilinfrastructures. Engineering geological characteristics of the tunnel host ground including geotechnical parameters of surrounding soil,groundwater situation, and in situ stress condition are amongst the most important factors affecting settlement. In this research, groundsettle...

Mathematical Analysis of the Behavior of Soft Ground Against Tunnelling

Mathematical Analysis of the Behavior of Soft Ground Against Tunnelling

Improvement of Stopband Performance OF Microstrip Reconfigurable Band Pass Filter By Defected Ground Structure

A scheme for designing reconfigurable parallel-coupled-line bandpass filters using a SPDT MEMS switch, capable of operating at two different passband is presented. The spurious resonance of the filter has been removed by using defected ground structures to obtain better stopband performance. A proto-type filter with passband center frequency around 3.5 GHz and 5.0 GHz has been designed. The sim...

Dual Band Notched UWB Monopole Antenna Using Embedded Omega Slot and Fractal Shaped Ground Plane

This paper presents the development of an Ultra Wide Band (UWB) monopole antenna with dual band notch characteristics. Modified crown-square shaped fractal slots in the ground-plane are implemented to enhance the impedance bandwidth to around 58% as compared to conventional square monopole antenna without slots. Impedance bandwidth of the proposed antenna is approximately 114% with Voltage stan...